The exponent is usually shown
as a tiny number of the top right corner of the base number. This
calculator marks in front of the exponent letter e.

[ p ] back one step:
cancel last mathematical operation.

[ c ] Reset: reset
calculator

Calculator: calculator rounds result as
two decimals accuracy after each step. Final results is all the time
visible (*). If you keep a long recess, calculator and its memory will
reset, start then making new calculations by pressing [ c ] reset.